3gsara

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3G SARA click

3G SARA click is a versatile cellular network communication solution, featuring the compact 3.75G UMTS/HSPA SARA U-201 modem from u-blox.

click Product page

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Click library

• Author : MikroE Team
• Date : Apr 2020.
• Type : UART GPS/GNSS type

Software Support

We provide a library for the 3gSara Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for 3gSara Click driver.

Standard key functions :

• Config Object Initialization function.

void c3gsara_cfg_setup ( c3gsara_cfg_t *cfg );

• Initialization function.

C3GSARA_RETVAL c3gsara_init ( c3gsara_t *ctx, c3gsara_cfg_t *cfg );

Example key functions :

• Power module.

void c3gsara_module_power( c3gsara_t *ctx, uint8_t power_state );

• Send command.

void c3gsara_send_command ( c3gsara_t *ctx, char *command );

Examples Description

This example reads and processes data from 3G SARA clicks.

The demo application is composed of two sections :

Application Init

Initializes driver and power module.

void application_init ( void )
{
    log_cfg_t log_cfg;
    c3gsara_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    c3gsara_cfg_setup( &cfg );
    C3GSARA_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    c3gsara_init( &c3gsara, &cfg );

    c3gsara_module_power( &c3gsara, true );

    c3gsara_send_command( &c3gsara, C3GSARA_AT_COMMAND ); 
    c3gsara_process( );
    c3gsara_send_command( &c3gsara, C3GSARA_AT_COMMAND ); 
    c3gsara_process( );
    c3gsara_send_command( &c3gsara, C3GSARA_AT_COMMAND ); 
    c3gsara_process( );
    c3gsara_send_command( &c3gsara, C3GSARA_ATE0_COMMAND ); 
    c3gsara_process( );
    c3gsara_send_command( &c3gsara, C3GSARA_AT_IFC_COMMAND ); 
    c3gsara_process( );
    c3gsara_send_command( &c3gsara, C3GSARA_AT_CMGF_COMMAND ); 
    c3gsara_process( );
}
  

Application Task

Reads the received data.

void application_task ( void )
{
    c3gsara_process( );
    
    if ( send_data_cnt == 5 )
    {
        c3gsara_send_command( &c3gsara, C3GSARA_ATH_COMMAND );
        c3gsara_process( );
        send_data_cnt = 0;
    }
    else
    {
        send_data_cnt++;
    }
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.3gSara

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.

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